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argonon▼noungeneric term
atomic number 86▼noun
chemical element▼noungeneric term
element▼noungeneric term
inert gas▼noungeneric term
noble gas▼noungeneric term
Rn▼noun
chemist▼noungeneric term
Friedrich August Kekule▼noun
Friedrich August Kekule von Stradonitz▼noun
Kekule▼noun
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